EPA Method 524.2 - Revision 4.0 Back Catalog number: 33001 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 11617.63-100MG Cyanocobalamine, 98% (dry weight basis),neat,neat,100mg, Price on request 15900-0230-100AN5 Atrazin, 100μg/ml in Acetonitrile, 5ml Price on request 79163 2,4-Dichloroanisole Price on request